Home / 2,681.80-4,024.07-1,220.76

Finding the Fourth Proportional to 2,681.80, 4,024.07 and 1,220.76

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Solution

The fourth proportional to 2,681.80, 4,024.07 and 1,220.76 is: 1,831.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.80 : 4,024.07 = 1,220.76 : x
  2. Step 2: Convert to fraction form
    2,681.80/4,024.07 = 1,220.76/x
  3. Step 3: Cross multiply
    2,681.80x = 4,024.07 × 1,220.76
  4. Step 4: Simplify right side
    2,681.80x = 4,912,423.69
  5. Step 5: Solve for x
    x = 4,912,423.69/2,681.80
  6. Step 6: Final answer
    x = 1,831.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.